There are total 18 hours or 1080 minutes from 7am to 1am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 7AM to 3AM | 2PM to 8PM | 9AM to 5AM |
| 6AM to 3AM | 10PM to 9PM | 8AM to 6PM |
| 5PM to 1PM | 12AM to 4PM | 7PM to 5AM |
| 12AM to 1PM | 6AM to 6PM | 2PM to 9PM |
| 8AM to 2PM | 6PM to 11AM | 10PM to 11PM |
| 3AM to 10AM | 12PM to 11AM | 12PM to 6PM |
